<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" :checked="isCheckAll" @change="handleChange" />
    </label>
    <span>
      <span>已完成 {{ todosStore.isDoneNum }}</span> / 全部
      {{ todosStore.total }}
    </span>
    <button class="btn btn-danger" @click="todosStore.deleteAllTodo">
      清除已完成任务
    </button>
  </div>
</template>

<script lang="ts">
import { mapStores } from "pinia";
import useTodosStore from "../../store/modules/todos.ts";

export default {
  name: "TodoFooter",
  computed: {
    ...mapStores(useTodosStore),
    isCheckAll() {
      return (
        this.todosStore.total === this.todosStore.isDoneNum &&
        !!this.todosStore.total
      );
    },
  },
  methods: {
    // Event 和 HTMLInputElement 都是内置类型
    handleChange(e: Event) {
      this.todosStore.updateAllTodo((e.target as HTMLInputElement).checked);
    },
  },
};
</script>

<style>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>
